Question

Two adjacent sides of a parallelogram measure 5cm and 3.5cm. One of its diagonals measures
6.5cm. Find the area of the parallelogram.

Answer 1

here is your answer...
the area of the parallelogram is 10√3 cm^2
hope this helps you..

Answer 2

The answer is explained in the attachment.

$Answer : \boxed{ 10 \sqrt{3} }$

Hope it helps!